There has been a build-up of troops on both sides of the border.

边境两边的军队都在逐渐增兵。

《柯林斯英汉双解大词典》

What's really needed, critics say, is even tougher laws and more resources aimed at tightening up border security.

批评人士说，为了严控边境安全，真正需要的是更严厉的法律和更多的资源。

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Measures should include direct economic confrontation with China including sanctions and border controls – backed up, if necessary, by military action.

书中提到，美国应该采取的措施包括：与中国进行直接的经济对抗，包括制裁和边境控制——必要情况下，以军事行动作为支援。

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Then,on April twenty-fifth, General Taylor received word that a large Mexican force had crossed the border a few kilometers up the river.

VOA: special.2009.02.26

The Confederates had moved up through Tennessee into the border state of Kentucky.

VOA: special.2009.09.03

Brennan promised that the United States will keep up the pressure on terrorist havens worldwide, including those near the Afghan-Pakistani border.

VOA: standard.2009.08.06

And it will help the Border Patrol free up commissioned Border Patrol officers, to get back on the streets, to use a colloquialism.

NPR: Critics Question Using Nat'l Guard Troops at the Border

Meanwhile the Israeli army, caught flat-footed both on the Golan Heights and on the border with Lebanon, will have to shore up the border, at least in the north, to make it physically impassable.

ECONOMIST: Israel and Palestine

But he also touted what his administration has already done to beef up Border Patrol.

NPR: Bush Promotes Immigration Reform